<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="unqualified">
    <xsd:include schemaLocation="schB1_b.xsd" id="a"/>
    <xsd:group name="grp" id="a">
	<xsd:sequence>
		<xsd:element name="e" type="xsd:string" />
	</xsd:sequence>  
    </xsd:group>
</xsd:schema>